The ongoing cost of running a heat pump is difficult to predict, as it depends on many factors. The cost is affected by the type and model of the heat pump, the features, and size of the property, the outside temperatures, and how the heat pump is being used. It is however no question that heat pumps are significantly more energy efficient than standard radiators in the UK.
In particular, the SCOP rating (Seasonal Energy Efficiency Rating) of air-to-air heat pumps are between 3-4. This means, for every 1 kW of electricity, we can get 3 or 4 kW of heat generated. In contrast, a standard UK heating system with radiators tends to have a SCOP rating of 2.5. Therefore for every 1kW of energy, only 85% is used. There is an energy loss of around 15%. Having a 300% efficient heating system vs an 85% efficient heating system, will make a difference on any wallet.
Cost Comparison of Air-to-Air vs Air-to-Water Heat Pumps
The initial cost of installing an air-to-air heat pump in the UK, is around 1,600 – 3,000 for an average 2-3 bedroom property. It requires a simple installation compared to an air-to-water heat pump. An air-to-water system will require reconfiguring and readjusting all the existing pipe work in a property. It is also hugely expensive. Approximately £7,000 – 30,000. Whereas an air-to-air heat pump there is no need for such a large reconfiguration. It is a simple installation of an external unit, and internal units to the walls. Hence, a lot quicker and works out a lot cheaper too.
Energy Efficiency of Air-to-Air vs Air-to-Water Heat Pumps
Efficiency-wise they are both more efficient than standard UK heating systems. Air-to-water however tends to be slightly more efficient than an air-to-air heat pump. By how much, it largely depends on the features of the property, whether it is an open plan, or if it has many separate rooms and walls in it.
In order to gauge more precisely how much it will cost to run different an air source heat pump in your property, it is best advised to seek advice from one of our heat pump installers. They can assess your property’s requirements, and features. They can take into account the size, and position of your home, and advise accordingly of more precise costs and prices.
